A Chicago mother tells NBC News she and her 2-year-old were hit with a chemical agent. Many residents say the city wasn’t a “war zone”— until immigration agents swept through.

Allegations over excessive use-of-force by federal immigration agents in the Chicago area during "Operation Midway Blitz" will be a key focus during a hearing Wednesday morning at Dirksen Federal Courthouse.

The preliminary injunction hearing stems from a lawsuit filed by news outlets and protesters who say agents have used too much force, including tear gas, during demonstrations.

The incoming preliminary injunction replaces a temporary restraining order issued by U.S. District Judge Sara Ellis in early October that was set to expire at 11:30 a.m.

A federal judge in Chicago on Thursday slammed immigration officers’ use of force on members of the media and protesters, issuing an extensive injunction preventing federal law enforcement

Over the weekend there were violent clashes between federal agents, witnesses and protesters. Locals say the festivities were muted this year, and fear more violence is in store for the city.

The government said the requirements would 'effectively prohibit ICE from temporarily holding any individual in the state of Illinois.'

As the Trump administration’s mass deportation raids begin their third month, their impact has stretched across the Chicago region. Here’s what to know.

The order will be in effect for 14 days. It requires officials to provide detainees at a U.S. Immigration and Customs Enforcement facility in the west Chicago suburb of Broadview with a clean bedding mat and sufficient space to sleep, soap, towels, toilet paper, toothbrushes, toothpaste, menstrual products and prescribed medications.